Abstract
ALTHOUGH numerous Christian churches are either oriented or adorned with reference to some astronomical phenomenon, there are few of such direct interest to the astronomer as the magnificent cathedral of Florence, which contains a gigantic contrivance for determining the advent of the summer solstice. We refer to the famous gnomon, placed in the dome of that cathedral by Paolo Toscanelli about the middle of the fifteenth century, and described and illustrated by Mr. W. A. Parr in the December number of Knowledge and Scientific News.
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R., W. The Great Gnomon of Florence Cathedral . Nature 73, 258–259 (1906). https://doi.org/10.1038/073258a0
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DOI: https://doi.org/10.1038/073258a0